APA-viite

Liu, C. L. (1972). Topics in combinatorial mathematics. Mathematical Association of America.

Chicago-tyylinen lähdeviittaus

Liu, C. L. Topics in Combinatorial Mathematics. [Buffalo, N.Y.]: Mathematical Association of America, 1972.

MLA-viite

Liu, C. L. Topics in Combinatorial Mathematics. Mathematical Association of America, 1972.